Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db14ddf1f21e72d…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 07:25:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 2c9753d5ddd6ed9ef6fe9fd2c0189e74 SHA-1: e8c7ed0207ce8f5592e49bf14e84efe5c7051e43 SHA-256: 7db14ddf1f21e72d27dedacaf311c77f33c0e8162453b64ac07f24e9170fa4c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or free currency generator. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body and extracted URLs strongly suggest a social engineering pretext to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/how-to-get-free-roebucks-without-verification-game-hack In PDF document text
    • http://perpus.stikesphi.ac.id/repository/get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/sake-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-hack-roblox-for-free-stuff_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-robux-no-hack-or-scam_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/fps-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/hacks-for-roblox-pc_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/tiktok-free-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/generateur-de-robux-cheat_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C9 21716 bytes
SHA-256: 2deb870440243255d6dfbc881e4edcf89ef5c1e4e3370c6f9a6503741c83cfb6
font_01_sfnt_off0000617c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617C 19564 bytes
SHA-256: 9f7482f6da1ff2c580fc6fdb6711db36ab36ad0569cde63c940962ab18b633f8

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